/Engine/Plugins/Media/PixelCapture/Source/PixelCapture/Public/IPixelCaptureCapturerSource.h
Implement this to create an capture process that captures to the FinalFormat at the given scale. The source format should be known by whatever is fed into the capture system.
TheFPixelCaptureCapturerthat will do the work.
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FPixelCaptureCapturer](API\Plugins\PixelCapture\FPixelCaptureCapturer) > CreateCapturer ( int32 FinalFormat, float FinalScale )